IP CIDR Calculator
Calculate IP address ranges and subnet masks from CIDR notation. Useful for network planning and subnetting.
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How to Use
The IP CIDR Calculator, sometimes called a subnet calculator, IP range calculator, or network address calculator, helps you analyze and understand IP address ranges using CIDR notation. To use the tool, simply enter an IPv4 address and a CIDR prefix length (for example, 192.168.1.0 and 24). The calculator will instantly display key details such as the network address, broadcast address, usable IP range, subnet mask, and more. You can easily copy any result to your clipboard for further use.
More About This Tool
The IP CIDR Calculator is designed to help network engineers, IT professionals, and students quickly analyze and visualize IP address ranges using CIDR notation. CIDR, or Classless Inter-Domain Routing, replaced the older class-based system for allocating IP addresses, allowing for more efficient use of address space and easier network management. By entering an IP address and a CIDR prefix, users can instantly see important details about the network, such as the range of usable IP addresses, the network and broadcast addresses, and the total number of hosts available. The tool also displays the subnet mask in both decimal and binary formats, as well as the wildcard mask, which is useful for configuring network devices and access lists. Understanding these values is essential for designing scalable, secure, and efficient networks. The calculator is a valuable resource for anyone working with IP addressing, subnetting, or network planning, and can save time and reduce errors compared to manual calculations.